1. Find the subject. (I / you / we / they / he / she / it)
2. Choose DO or DOES
DO → I / you / we / they / plural nouns (cats, dogs, students
DOES → he / she / it and one person / one thing (cat, dog, student)
3. Put DO / DOES in the gap.
EXAMPLE:
- Where does your mother cook every day?
→ Subject = your mother (she) → Use DOES.